two: Friends of the chain can promote the site collection
three: the chain can transfer the weight of
described in this paper
chain can improve the site keywords ranking is already a fact in front of. We also can be a chain as a chain of our site, this is a chain attract spider entrance. If your site and another site for a friend chain exchange, and the weight of each other site is relatively high, the spider crawling is relatively frequent, so naturally through the chain of this channel will lead spider to your site. At the same time as this will make your site search engine to leave a better impression. Maybe this is what we often say: ’tis. In this way we can achieve mutual benefit, keywords naturally site rankings is not what strange things.